Liquid Crystal Magna

Unboxing

The Liquid Crystal Magna comes in its own made to measure crate designed to protect your Liquid Crystal Magna. Follow the steps below properly to unpack your printer.

Note: Please do not remove the protective film covering the printer screen

1. Remove top and front panels

3. Remove the shelf and side panels

2. Remove the resin bottles and accessory box

4. With 4 people lift the LC Magna from the crate onto a suitable flat surface. (Refer to safety instructions in the user manual)

Ancillary Box Contents

Recommended Items:

Extra gloves.
Paper towels.
Access to a sink with hot water to clean the object.
Liquid Soap (detergent) to clean the object.
Glass or clear plastic container to post expose the object in.
Air gun and air compressor (Optional)
Access to Photocentric Resin cleaner (Optional) and Photocentric Wash 99 unit (Optional).

Printer Set Up

Once you reach this stage, LC Magna should already be in position on a secure appropriate bench, ready for use.

 

1. Open the door and remove linear drive protection

2. Take the power cable and align plug to Magna’s power socket as shown in the photo. Push the plug in, and twist 90 degrees clockwise until it clicks. Then, connect the power cable to a wall socket.

Note:  To unplug the printer from the power, first unplug the power cord from the wall socket. Then disconnect the plug from the printer.

Note: To remove the plug, pull back the latch and twist 90 degrees anticlockwise.

3. Also at this stage, you can prepare the printer for internet connectivity.

3.1. Wi-Fi- Push the supplied Wi-Fi dongle into the back panel socket.

3.2. Ethernet- Connect one end of an Ethernet cable to the socket with the other end connected to your local area network.
Now, turn the printer on by pushing the front power button.

Note: When you press the maintain button the LC Magna logo will turn from red to blue.

4. If you are planning to connect to Wi-Fi, go to the Network menu.

Select your Wi-Fi network.

Press ‘Connect’.

Write the password and connect.

You should see an IP address appear in the top left corner of the GUI Home menu.

 5. Your LC Magna is all set and ready to use. 

Print

Print Pre-Sliced file

We have stored two test files on your printer. One has been prepared to work with Daylight Magna Hard black resin and the other with Daylight Magna Dental White resin.

1. Pick one of the sample resins

2. Make sure vat bolts are fully tightened.

3. Empty 2kg of sample resin into the vat.

4. Select the relevant file and press ‘Print’.

5. Once the print is done, you can start the cleaning process.

(Refer to video tutorials below)

Print your own file

Photocentric Studio Software set-up

1. Please refer to the Photocentric Studio manual here to install software and activate your license.

2. Select LC Magna and your desired resin profile then press apply.

Slice your own file

1. Open your STL, OBJ or P3D file or files. Orient and support them as you wish. Suitable orientation and support layout are vital to achieve success. Please refer to example here to learn how to correctly orient and support files.

2. In order to achieve the highest accuracy with LC Magna, we recommend you scale up models in X and Y by 0.5%.

For maximum accuracy, we also recommend locating parts 5mm higher than the build platform and adding supports

Note: For Dental arches the latter step is not necessary.

3. If you have more than one part on the platform, choose Nesting option to auto-align parts on the platform.

4. Click Slice icon.

5. Select your preferred location to save the sliced file.

6. You can change your sliced file name in the pop-up window if required.

 7. Now, start slicing.

Upload your sliced file

1. Save the sliced *.cws file onto your USB drive (if you are connected to the internet you can upload it directly: see instructions below from point 4)

2. Insert USB and select the Print Files icon on the touchscreen.

3. After a few seconds, your file will appear in the print job queue.

4. To upload using the internet, proceed as follows:

  •  Write your LC Magna IP address (see top left corner of GUI), in your web browser address box
  • Press Upload, then Browse and select your file to open.
  • Press Upload file.
  • Once uploading is complete (100%), click on main page.
  • Your file should appear on both the web interface and machine interface (GUI).

Print set-up

1. Make sure the vat is clean, dry and bolted down tightly.

Note: Bolting the vat down tightly is critical for successful peel release. You can check peel function by going to the Maintain menu, selecting Pump button and following on-screen instructions. 

2. Make sure platform is clean and bolted tightly into place.

 3. Add resin to vat. Use volume gauge to add required amount of resin.

Note: You need to fill resin up to the MIN mark and then add the required amount of resin for your print. For example, if Photocentric Studio shows a total volume of 1L – add 2.5L of resin. (1.5L min + 1L for parts).

4. Select your file from Print Files menu and press print.

5. Once the print is done the LC Magna logo will change from red to green, you can start the cleaning process (sections 3 and 4).

 

Clean

1. Take off the platform. Drain off excess resin by holding the platform vertically over the vat.

2. Wipe off the remaining excess resin from the platform with absorbent paper.

3.1. Place the platform in Photocentric Wash99 filled with Photocentric Resin Cleaner. Wash for 5-10 minutes.

If necessary, leave longer than 10 minutes.

Take the platform out of the wash unit and rinse with warm/hot water.

Or

3.2. Spray warm soapy water over the parts. A sponge or soft brush can be useful to clean detailed parts. Rinse with warm/hot water.

4. Once cleaned, there should be no trace of uncured resin visible.

5. If you have access to an air compressor with an air gun, you can dry your parts after cleaning. We recommend this for delicate and accurate parts to ensure all holes and pores are free of any traces of uncured resin.

Finish

1. Gently remove the parts from the platform by sliding the scraper (provided) or a snap-off blade knife (taking great care) underneath parts.

2. Place parts under hot water (60°C) in UV light for 15 minutes to remove the surface tack.

3. Large parts can be post exposed for 1 hr in water, under UV light.

4. Once post exposure is complete, dry parts and your print is ready.

5. To prepare for the next print job, scrape off any cured resin and clean the build platform with hot water and Photocentric Resin Cleaner in the spray bottle. Dry the platform and place on the print arm.

Note: Take extra care to make sure the platform is clean and there is no residue of cured parts. Any hard resin may pierce the vat film and could cause print failure. Please see Maintain Section.

6. Pour the remaining resin from the vat back into the bottle using the funnel and filter paper provided.

7. Use the vat cleaning tool (provided) to direct any excess resin from the vat down towards the funnel.

8. Place the vat on the Foam Vat Cleaning Mat (provided) and mop up any resin residue with absorbent paper.

9. Use the soft spatula (provided) extremely carefully to remove small cured pieces.

Note: Take extra care to make sure the Cleaning Mat is perfectly clean and there are no chips of cured resin on it. If the vat film gets damaged, it can lead to a vat leak and damage to your printer.

10. Make sure your screen plate area is clean prior to placing the vat back into place on the printer.

11. If you have evidence of a leak on the screen, mop up the liquid resin immediately using absorbent paper or a damp tissue with IPA. Hardened resin can be removed by chipping off carefully with the provided soft spatula. It is extremely important to keep your screen plate surface clean from any resin. If not, you risk print and/or printer failures.

Maintain

Vat Re-Skinning

You will need to change the vat film after 6 times of use.

You need
1x LC Magna Vat film
1x set of gaskets (1x Vat gasket + 1x vat seal)
1x Pozi1 Screwdriver
1x Pozi2 Screwdriver
Clean surface area.

Re-homing print platform

You will rarely or never need to rehome the platform.

Note: when you purchase a new platform, simply place it on the print arm with no extra adjustment.

You will need
1 x Spanner 13mm
1 x Allen Key 5mm
2 x A3 or 4 x A4 sheets of paper
1 x Torque wrench (Optional)

Please see here a sample product to choose a correct torque wrench

Note: We recommend using torque wrench to enhance calibration accuracy. Torque wrench specs should be set to 0.03Nm.

General Maintenance

1. It is extremely important to keep the top surface of your printer clean. If the screen film gets damaged please contact us, using the ‘contact us tab’ on this page, or contact your local distributor.

2. Please vacuum the side panel fans every two months. It is important to keep fans dust free and avoid overheating the electronic parts.

3. Make sure to lubricate the ball screw of linear drive, every 6 months or after 1000 hours of operation. Please use suitable grease. We recommend a lithium soap based no2 grease.

4. If you would like to use extraction, you can connect LC Magna to your extraction network. First, remove the extraction cover plate on the back panel of the printer. Then, bolt in the provided Extraction Spigot. Magna is now ready to be connected to any extraction unit.

5. In case of any serious vat leak and sign of resin leak underneath your printer, stop the printer and unplug it. Contact immediately using the ‘contact us tab’ on this page or your local distributor

Tips & Tricks

Vat

• Be careful when placing the vat back inside the printer, it needs to be positioned accurately to not pull the vat edge seal gasket off.
• Make sure the vat edge seal gasket remains attached and in place, otherwise the blow peel will not function properly.
• Keep the vat clean and free from any cured resin residue as this can lead to print failures.
• To avoid re-skinning regularly, you can repair small holes in the vat film by sticking a piece of clear tape underneath the side of the vat film. Note you may see a slight imprint of the tape on your print.
• Make sure when you are cleaning the vat, no broken supports are left as they will result in the vat piercing and print failures.

Platform

• You should not need to re-home your print platform as all the printers are pre-homed before leaving Photocentric HQ.
• Make sure the print platform is fully secured to the print arm.
• If on a rare occasion your platform does need to be re-homed, ensure you are following the instruction manual on the User Interface.
• Keep the platform exceptionally clean. Remove any residue resin from top and bottom, paying attention to cleaning the countersunk holes.

 
Blow Peel

• When the vat is clean, test the blow peels effectiveness by securing it with the 4 retaining bolts and run the blow peel test shown on the User Interface. You can see and feel the air passing from the four corners into the middle of the vat. If the vat film does not inflate then either the vat is not tightly secured or the foam gasket needs reattaching.

Supports

• 0.7mm tips / 1.5mm bodies / 1.5mm pole widening factor
• Bodies can be reduced to 1mm if you’re printing smaller parts
• Elevate parts to 5mm or more away from the base when using supports

 
Orientation

• To reduce the effect of pixel shift on the surface of large flat surfaces, we recommend orientating your part at a 45° angle to the XY plane.
• To enable reliable and accurate printing orientate the part at a 45° angle to the Z axis.

Washing

• Place parts on their own in the wash unit or place the whole platform in it. We recommend 15 minutes in our ultrasonic cleaner when using Photocentric Resin Cleaner.
• To clean very small holes you can spray them with Photocentric Resin Cleaner or use a soft silicone brush to gently clean the surface.

Post exposing

• Dental models – place your printed platform in the Photocentric Cure L at 65°C for 15 minutes. Afterwards move it to the water bath of the Cure unit for a further 30 minutes. To remove the models from the platform easily, take the hot platform from the Cure L and immediately put it in a container of cold water, the models will gently slide off.
• Automotive and large parts – place your platform in the Photocentric Cure L at 65°C for 2 hours. After this your parts will be fully cured and ready for support removal.

Troubleshooting

Loud Beeping Noise

If you are experiencing this loud noise coming from your LC Magna then it sounds like your Magna blow peel sensors have gone off, this will have occurred due to a vat leak.

This is caused when the vat film has unexpectedly been pierced or torn and resin has passed out of the vat and onto the blow-peel system. To prevent damage to the machine the system activates sealing your blow peel system and the alarm activates to indicate that the leak has occurred.

In this event please follow the below guide:

1. DO NOT REMOVE THE VAT UNTIL PROMPTED, this will cause any resin held in the vat to no longer be retained inside the vat wall.

2. Immediately cancel the print.

3. Go to Maintain menu and use the lift platform function to ensure print platform is raised allowing full access to the vat. Remove the platform from the printer.

4. You may wish to turn off the machine, as during this process the buzzer will sound continuously. Doing so will not adversely affect the system.

5. Empty any remaining resin in the vat by scooping out resin from the vat.

6. Wipe out the vat the resin residue.

7. Carefully remove the vat from the printer.

8. Wipe any excess resin off the screen.

9. Identify which air hole has been contaminated with resin, this may be one or more of the holes.

10. Take a new pipette from accessories box and use this to remove the resin from air hole.

11. Fill the pipette with fresh IPA, apply this into the air hole and flush by squeezing and releasing the pipette.

12. Continue this until the IPA is contaminated then dispose of the contaminated IPA and repeat the process until the IPA is clear.

13. Once clear use the swab from the kit

to dry any excess IPA from the hole.

14. Once you are satisfied, turn the printer back on (if turned off) or press the reset button at the back right of the screen plate to reset the leak system. The continuous beeping noise should now have stopped and the printer is ready for use.

15. If the buzzer continues there is still contamination in the holes. Please re do the 10 -13 cleaning steps.

Technical Enquiry

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